On Wednesday 29 Jul 2009, Srdjan Vasiljevic wrote:
> How powerful server would you recommend for 25 users ?
>
> They will use terminal server client, firefox and open office.

I have two such servers, with quadcore xeon 5320s and 4gb ram.  I have added 
an additional cpu in both servers, but only because the cost of so doing is 
trivial, I don't believe they are required.

I hope I don't get shot down by saying that it does also depend on the distro 
that you use.  I would imagine Debian Lenny would run on a lower spec than 
Ubuntu Hardy.

> There will also be virualbox runing on server and "Windows Server 2003"
> running on it.

Do consider the open source "kvm" instead of virtualbox.  Virtualbox does have 
an open source edition, but it does not include the ability to run headless, 
which you will require.  There is a non-free-as-in-speech edition which does 
include that ability, but it is not free-as-in-beer for commercial use 
(unless things have changed since Sun took them over).

KVM works very well, and we've been running with rdesktop with seamless 
applications (running on the Linux desktop without a Windows desktop) for 
over a year now, without major issues.

-- 
Chris Roberts

+------------------+--------------------------+
|     Distribution | Debian Etch (backports)  |
|     LTSP Version | 5.1.10-1~40              |
|  Windows Manager | KDE 3.5.5                |
|           Kernel | 2.6.26-bpo.1-686         |
+------------------+--------------------------+
|     Distribution | Debian Lenny (backports) |
|     LTSP Version | 5.1.69-1                 |
|      LDM Version | 2:2.0.39-1               |
|  Windows Manager | KDE 3.5.10               |
|           Kernel | 2.6.26-2-686             |
+------------------+--------------------------+

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